.SplitPane{
  border: solid 1px black;
  position: relative;
  display: flex;
  width: 100%;
  flex-direction: column;
  color: white;
}
.SplitPane-top,.SplitPane-middle,.SplitPane-bottom{
  width: 100%;
  text-align: center;
}
.SplitPane-top{
  height: 100px;
  background: lightgray;
}
.SplitPane-middle{
  height: 150px;
  background: cadetblue;
}
.SplitPane-bottom{
  height: 200px;
  background: mediumpurple;
}
.FancyBorder-coral{
  border:coral 5px solid;
}